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METHOD FOR DESTROYING PENICILLIN ACTIVITY IN AN ANTIBIOTIC COMPRISING PENICILLIN
METHOD FOR DESTROYING PENICILLIN ACTIVITY IN AN ANTIBIOTIC COMPRISING PENICILLIN
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机译:破坏青霉素类抗生素的青霉素活性的方法
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1,259,204. Purifying cephalosporin antibiotics. ELI LILLY & CO. 10 July, 1969 [10 July, 1968], No. 34874/69. Heading C2A. A method for freeing a mixture of cephalosporin and penicillin antibiotics from penicillin biological activity comprises treating the mixture with a 2-mercaptoamine of formula wherein RSP1/SP and RSP2/SP are hydrogen or C 1- C 9 alkyl, and RSP3/SP is hydrogen, -COOH or a salt thereof or COOR where R is C 1 -C 9 alkyl, at a pH of 4 to 9 and a temperature of 20-40‹ C. using a molar ratio of 2-mercaptoamine to penicillin of at least 1. The process is preferably performed in aqueous medium or in a mixed aqueous-organic medium of water with ethanol or dioxane. Preferred mercapto-amines are 2-aminoethanethiol, 2-dimethylamino-ethanethiol, cysteine or its ethyl ester, N-butylcysteine and 2-(N-hexylamino)ethanethiol. The penicillin activity is destroyed due to reaction with the mercaptoamine with opening of the #-lactam ring to give an amide derivative.
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机译:1,259,204。纯化头孢菌素抗生素。 ELI LILLY&CO。1969年7月10日[1968年7月10日],第34874/69号。标题C2A。从青霉素的生物活性中释放头孢菌素和青霉素抗生素的混合物的方法包括用下式的2-巯基胺处理该混合物:其中R 1 SP>和R 2 SP>是氢或C 1- C 9烷基,且R 3 SP>为氢,-COOH或其盐或COOR,其中R为C 1 -C 9烷基,pH为4至9,温度为20-在40℃下,使用2-巯基胺与青霉素的摩尔比至少为1。该方法优选在水性介质中或在水与乙醇或二恶烷的混合水-有机介质中进行。优选的巯基胺是2-氨基乙硫醇,2-二甲基氨基乙硫醇,半胱氨酸或其乙酯,N-丁基半胱氨酸和2-(N-己基氨基)乙硫醇。由于与巯基胺的反应会破坏青霉素的活性,同时打开#-内酰胺环,生成酰胺衍生物。
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